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无铅焊料
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无铅焊料
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lead-free solder
无铅焊料
铅含量低于0.1%的软钎料。广义上指不添加铅、银、镉等有害元素的软钎料。
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free period
free pipe
free piston engine
free-point method
free pollination
Freeport
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free probability theory
free problem
free product
free product group
free quantization
free Radical
free radical
free radical biology
free radical chain degradation
free radical damage
free radical isomerization polymerization
free radical lifetime
free radical metabolism
free radical polymerization
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